Speaker: Prof. Dr. Jian Li, Arizona State University

Time: 15:00-16:30 p.m., Jun 12, 2024, GMT+8

Venue: Rm. 101, Xiaolun Hall #C, College of Chemistry and Molecular Engineering, Peking University

Abstract: 

The successful development of efficient and stable molecular blue emissive materials will have a significant impact on the continued deployment of organic light emitting diodes (OLEDs) technology for display and lighting applications. In this presentation, we will discuss our continuing efforts on the design, synthesis and characterization of novel platinum and palladium complexes for displays and lighting applications.  The photo-physics, electrochemistry, electroluminescent properties and operational stability of these novel metal complexes, including deep blue narrowband emitters, blue emitters with 6-membered chelate rings and blue MADF emitters, will be discussed, particularly including our 15-year effort in the design of efficient and stable narrowband phosphorescent emitters. The rational molecular design enables us to develop cyclometalated metal complexes with both photon-to-photon (in thin film) and electron-to-photon (in device settings) conversion efficiency close to 100% for OLED applications. Our approaches to achieve improved operational stability of blue OLED using such class will be also included.

Source: College of Chemistry and Molecular Engineering, PKU